package com.example.utils.JWT;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;
import java.util.Calendar;
import java.util.Map;
/**
 * @Description: TODO
 * @Author runto
 * @Date 2023/11/5 23:25
 * @PackageName:com.example.utils.JWT
 * @ClassName: JWTUtils
 * @Version 1.0
 */
public class JWTUtils {

    private static final String SECRET = "thisismastergoose";

    /**
     * 生成token  header.payload.sing
     */
    public static String getToken(Map<String, String> map){
        Calendar instance = Calendar.getInstance();
        instance.add(Calendar.DATE,7);//默认7天过期
        //创建jwt builder
        JWTCreator.Builder builder = JWT.create();
        //payload
        map.forEach((k,v)->{
            builder.withClaim(k,v);
        });
        String token = builder.withExpiresAt(instance.getTime())//指定令牌过期时间
                .sign(Algorithm.HMAC256(SECRET));//sign
        return token;
    }

    /**
     * 验证token 合法性
     */
    public static DecodedJWT verify(String token){
        return JWT.require(Algorithm.HMAC256(SECRET)).build().verify(token);
    }

}